#include"mystdio.h"

int main()
{
	_FILE* fp = _fopen("log.txt", "a");
	if(NULL == fp)	return 1;

	const char* mes = "hello mystdio.h!\n";
	
	_fwrite(fp, mes, strlen(mes));
	_fflush(fp);

	_fclose(fp);
	return 0;
}
